For valve selection, especially control valves, what parameters are required in abnormal situations?
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By abnormal conditions... I mean what parameters are required even for the most basic selection? Many selection software tools, such as Koso, Yadi, Meso, and Fisher, provide different parameters
Typically, the following factors are considered: valve type, material (valve body, seat, stem), diameter, pressure rating, connection type, and stem sealing material
Is there anything more detailed? Generally, most factors can be taken into account, but many detailed parameters are not something that can be remembered right away; sometimes they get overlooked unintentionally, which leads to increased costs. . .
Basically, it’s necessary to follow the requirements: considering the medium, temperature, and pressure to determine the material and type of valve. Then, depending on the type, it’s needed to decide whether it should be pneumatic or electric, whether feedback is required, and if there are other requirements such as maintaining the position in the absence of air supply.
Operating conditions, maximum flow rate and normal flow rate, whether cavitation will occur